摘要
低渗透油田开发进入中后期,合理评价注水效果是制定合理精细注水政策的前提和基础。通过地层压力与饱和压力关系分析压力保持水平级别,利用相对渗透率曲线得出含水率与采出程度理论曲线,通过与实际曲线位置关系评价开发效果好坏。利用水驱指数与注采比关系,计算得出不同注采比条件下标准图版,将实际曲线与同类油藏存水率、水驱指数标准图版对比评价水驱开发效果。研究表明,N区块生产能力较好,采液量、注水量差异与地层压力变化保持一致,利用含水率与采出程度关系图版、存水率图版、水驱指数图版评价油藏开发效果较好。
In the middle and later stage of development of low permeability oil field, the reasonable evaluation of water injection effect is the precondition and foundation for making reasonable fine water injection policy. Through analyzing the relationship between the formation pressure and saturation pressure, the pressure level is maintained. The theoretical curves of the water cut and the degree of production are obtained by using relative permeability curves. The effect of the development is analyzed through comparing actual curve and the theoretical curves. The relationship between water flooding index and injection production ratio is used to calculate the standard plate under different injection production ratio. The actual curve is compared with the similar reservoir water storage rate, water flooding index standard chart to evaluate development effect of water flooding. The research shows that the production capacity of N block is good, and the difference of production volume and water injection volume is the same as that of formation pressure. The water cut and recovery degree relation chart, water storage rate chart, water flooding index chart can be used to evaluate the reservoir development effect.
出处
《当代化工》
CAS
2016年第2期400-403,共4页
Contemporary Chemical Industry
基金
2015年校级研究生创新科研项目"特低渗透油藏精细注水方案研究(YJSCX2015-013NEPU)"
关键词
开发效果评价
压力保持水平
存水率
水驱指数
注水调控措施
Evaluation of development effect
Pressure level
Water storage
Water flooding index
Flood control measures
